jquery - show/hide DIV when passed the other div

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jquery - show/hide DIV when passed the other div

posted Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

jquery - show/hide DIV when passed the other div

I want a hidden div show if he passed the another DIV. for example show in html below if div.passedMe bottom! meet the top of the window, the div.showHide will show and when scroll up and the div.passedMe top! meet the top of the window the div.showHide will hide.

Html

<div class="passedMe">If you passed this div another div will show/hide</div>

<div class="showHide"> this div will show/hide</div>

so far this is what I have but this only work when passed a certain PIXEL on A page

$(document).scroll(function () {
    var y = $(this).scrollTop();
    if (y > 100) {
        $('.showHide').fadeIn();
    } else {
        $('.showHide').fadeOut();
    }

});

this is the fiddle

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1 Reply

深蓝 · Answer 1 · 2021-10-17T03:08:55+0000

<html>
<head>
</head>
<body>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

<div class="passedMe">If you passed this div another div will show/hide</div>

<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

<div class="showHide" style="display:none;"> this div will show/hide</div>

<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js" type="text/javascript"></script>

<script type="text/javascript">
$(function(){
        $(document).scroll(function(){
                    var vis = ($(document).scrollTop() > ($('.passedMe').offset().top+$('.passedMe').height()));
                            $('.showHide').css('display', vis?'':'none')
                                });
        });
</script>

<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/><br/>

</body>
</html>

And if you wish to fadein/fadeout then instead of:

$('.showHide').css('display', vis?'':'none');

use

if (vis) $('.showHide').fadeIn(); else $('.showHide').fadeOut();

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jquery - show/hide DIV when passed the other div

jquery - show/hide DIV when passed the other div

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